go-zero/example/rpc/server/unary/etc/config.json

{
	"Name": "rpc.unary",
    "Log": {
        "Mode": "volume"
    },
    "ListenOn": "localhost:3456",
    "Etcd": {
        "Hosts": [
            "localhost:2379"
        ],
        "Key": "zrpc"
    }
}